A multifunctional aggregation-induced emission (AIE)-active fluorescent chemosensor for detection of Zn2+ and Hg2+ |
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| Institution: | 1. Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea;2. Department of Chemical and Biomolecular Engineering, and Convergence Program of Biomedical Engineering and Biomaterials, Seoul National University of Science & Technology, Seoul 139-743, Republic of Korea;1. Department of Fine Chem., SNUT (Seoul National Univ. of Sci. and Tech.), Seoul, 139-740, Republic of Korea;2. Department of Environ. Engineer., SNUT (Seoul National Univ. of Sci. and Tech.), Seoul 139-740, Republic of Korea;1. College of Chemistry and Materials Sciences, Fujian Normal University, Fuzhou 350007, PR China;2. College of Life Sciences, Fujian Normal University, Fuzhou 350007, PR China;3. Fujian Key Laboratory of Polymer Materials, Fuzhou 350007, PR China;4. Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fuzhou 350007, PR China |
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| Abstract: | An aggregation-induced emission (AIE)-active fluorescent chemosensor based on a tetraphenylethene (TPE) unit has been successfully designed and synthesized. Interestingly, the luminogen could detect Zn2+ selectively in a THF solution with the detection limit of 1.24 × 10?6 mol L?1. Meanwhile, the luminogen could also detect Hg2+ selectively in a THF-water mixture with the water content of 90%, and the detection limit was 2.55 × 10?9 mol L?1. Furthermore, the solid-state mechanochromic fluorescence behavior of the luminogen was investigated systematically. Indeed, the AIE-active luminogen also exhibited reversible mechano?uorochromic phenomenon involving ?uorescent color change from blue to green, and powder X-ray diffraction results indicated that the switchable morphology conversion between crystalline and amorphous states was responsible for this mechanochromism phenomenon. |
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| Keywords: | Tetraphenylethene Fluorescent chemosensor Aggregation-induced emission Mechanochromism |
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